2-MORPHOLINOETHANESULFONIC ACID

PRODUCT IDENTIFICATION

CAS NO. 4432-31-9
71119-23-8 (hydrochloride)

2-MORPHOLINO)ETHANESULFONIC ACID

EINECS NO. 224-632-3
FORMULA C6H13NO4S
MOL WT. 195.23
H.S. CODE 2934.99.9000
TOXICITY  
SYNONYMS 2-(4-Morpholino)ethanesulfonic acid; MES;
2-[N-Morpholino]ethanesulfonic acid; 4-Morpholineethanesulfonic acid; ácido 2-morfolinoetanosulfonico; Acide 2-morpholinoéthanesulfonique; Morpholineethanesulfonic acid; Morpholino-N-ethylsulfonate;
SMILES O=S(=O)(O)CCN1CCOCC1

 

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white crystalline powder
MELTING POINT 243 C
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER Soluble
AUTOIGNITION  
pH 2.5 - 4 (1% sol. at 25 C)
VAPOR DENSITY  
NFPA RATINGS Health: 1; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY Stable under ordinary conditions. Hygroscopic.

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking

Google Scholar Search

Drug Information Portal (U.S. National Library of Medicine) - MES

PubChem Compound Summary - MES

http://www.ebi.ac.uk/chebi/ -  MES

http://www.ncbi.nlm.nih.gov/ -  MES

Material Safety Data Sheet

Local: Buffer is a substance, generally a solution, that can keep its pH constant, despite the addition of strong acids or strong bases and external influences of temperature, pressure, volume, redox potential. Buffer prevents change in the concentration of another chemical substance, e.g., proton donor and acceptor systems that prevent marked changes in hydrogen ion concentration (pH). Many acid-base reactions take place in living organisms. However, for organisms to perform certain vital functions, the body fluids associated with these functions must maintain a constant pH. For example, blood must maintain a pH of close to 7.4 in order to carry oxygen from the lungs to cells; blood is therefore a powerful buffer. The commonest buffer in chemical solution systems is the acid-base buffer.

  • Bicarbonate buffer; a buffer system composed of bicarbonate ions and dissolved carbon dioxide; in the body, this system is an important factor in determining the pH of the blood as the concentration of bicarbonate ions is regulated by the kidneys and of carbon dioxide by the respiratory system.
  • Cacodylate buffer; one containing an organic arsenical salt, used in preparing fixatives for electron microscopy.
  • Phosphate buffer,   a buffer system composed of KH2PO4 and Na2HPO4; in the body, it is important in regulating the pH of the renal tubular fluids; when 0.025 molal (equimolal of the potassium and sodium salts), the pH is 6.865 at 25 C.
  • Protein buffer,   a buffer system involving proton donor and proton acceptor groups of the amino acid residues of proteins.
  • TRIS buffer (tromethamine): an amine base used intravenously as an alkalizer for the correction of metabolic acidosis. The pH values of all buffers are temperature- and concentration-dependent. For Tris buffers, pH increases about 0.03 unit per C temperature decrease, and decreases 0.03-0.05 unit per ten-fold dilution.
  • Veronal buffer; a barbital buffer commonly used in the preparation of fixatives for electron microscopy.
MES [2-(4-Morpholino)ethanesulfonic acid] is a general purpose buffer for biological research. Useful pH range is 5.5 ~ 6.7

SALES SPECIFICATION

APPEARANCE

white crystalline powder
ASSAY

99.0% min

LOSS ON DRYING

3.0% max

Cl

100ppm max

SO4

500ppm max

HEAVY METALS

15 ppm max

pH

2.5 - 4.0 (1% sol. at 25 C)
TRANSPORTATION
PACKING 1kgs, 25kgs in fiber drum
HAZARD CLASS Not regulated
UN NO.

 

SAFETY INFORMATION
Hazard Symbols: , Risk Phrases: , Safety Phrases: 22-24/25

PRICE INFORMATION